Lock mechanism for automatic firearms.



A. W. SGHWARZLOSE;

LOCK MECHANISM FOR AUTOMATIC FIREARMS.

APPLICATION FILEID SEPT. 3,1907v Patented Aug. 24, 1909.

1 Nm, l. um Sq w mllll.l|\V4 NSW@ - www A the same is applied to fire arms having a plifyA and render the mechanism more effecttension.

i view of an automatic lire arm-provided with muon.

ANDREAS WILHELM SCHWARZLOSE, 0F BERLIN, GERMANY.

LOCKMECHANISM FOR AUTOMATIC FIRERMS.

Specification of Letterslatent. l

Application led September 3, 1907. Serial No.-91,184.

To all 'whom 'it mayl concern:

Be it known that I, A. lV. ScnwARzLosn, subject of the German Emperor and resident of Berlin, Germany, have invented certain new and useful Improvements in Lock Mechanisms .for Automatic' Firearms, of which the fflmving is a" specification.

This invention relates to improvements in lock mechanism'for fire arms and is cspecially adapted'for use in connection with ire arms' oftheautomatic type.

The-main object `of the invention isto provide a lock mechanism which Iwill offer absolute security against accidental dischargeof the weapon and which will sim-` ive than constructions heretofore used. The' main object of providing absolute security is; realized by the. provisionof a mechanism wherein the usual main spring for actuating the hammer is not normally under.- tension and is therefore incapable of actuating the hammeruntil said spring is placedunder A furtherobject of theV invention, when slidably mountedbarrel, is to provide means carried by the barrel and adapted to cop- 'erate'with the hammer and be actuated by' the trigger for the purpose of'cocking and releasing fthe* hammer,

The invention ,comprises other features which will be more fully described in connection .vith the accompanying drawingsv and will be more particularly pointed out and ascertained in and'by the appended cl-aim.y y

In the drawings: Figure 1' is a sectional a slidably niounted'barrel and illustrating therewith. Fig..2 is a similar View showing the parts in a changed position. Fig. 3 isa front elevation of the fire arm shown in Fig. l. Fig. t is a bottomv plan View of the barrel detached. Fig. 5 illustrates plan and side views respectively of. an improved form of scar.- Fig. G shows front and side viewsof the hammer detached. Fig. 7 is a lan view of tension-link or element. Fig'..8'1 'lustr'ates a'modied form of the invention with parts broken away. Fig. 9 illustrates a further modification of the invention. Fig. l0 is a vertical sectional view of a still further modification of my invention.

Patented Aug. 24, 1909.

,'Like characters of reference designate v similar parts throughout the different figures of the drawings.

The device of my invention is specifically shown in accompanying drawings in connection with an automatic tire arm provided with a slidably' mounted barrel but it Will be understood that I do not Wish to be limited to the specific form shown;

Referring to the forms shown in Figs. l to 7 inclusive 1 designates the handle of the pistol in which is slidably mounted a common form of cartridge magazine 32 adapted vto be held in place'by a catch 16. Said catch 16, as shown, is pivotally mounted lat 17 and is provided with a shoulder 18 which engages the bottom Wall of the magazine to hold the same in place. A main spring, or the equivalent thereof, is indicated at 11 and -consists as shown of a flat Stripvof spring metal. Said spring is provided between its ends with a sfulcrum which may conveniently 'be forlned by a` flat surface 33 on the catch 16. The spring 11 is operatively associated with a hammer, indicated at 6, and preferably a lug 10 is formed on saidv hammer and is disposed in a manner to engage the upper end of said spring. In the form of hammer .shown'the same is pivoted -at 7 land is pro- Avided on its upper endwith a 'tiring pin 8. Said hammer is adapted to be actuated and released by a soar, herein after described, and

to thisv end said hammer is preferably provided with a-lug 22 which as shown projects; j d, 90T

laterally from. the hammen A barrel abut# ment 5 is located at the breech and is prof vided with an opening 9v to accommodate the firing pin 8.V The barrel 2 herein shown is slidably'- mounted and its construction and the con; struction'of-pan'ts associated therewith are' described in detail in 'my "co-pending application ledAugust 21,1907, Serlal o;

389,560 and willn'ot be described in detailb inl this easel as they form' no :featureY of the present invention. Generally speaking the barrel 2 is reeiprocated outwardly by the projectile when the cartridge is discharged and is returned, to the position shown in `i Fig. l, by a springr 4. A trigger Q6 is pivotally mounted at 25 and is provided with a Sear actuating member 28. rlfhe trigger 26 is held in a normal position by a spring 2T. Said trigger QG is adapted to coin/crate with 3 a tension member, which will be hereinafter more full y described, and is provided with a looking portion 3st adapted to be engaged by said member. Said barrel is provided with means the function oi which.. is to cock the hammer 6 upon the return movement of the barrel and be actuated by the trigger lease the hammer when said barrel has returned and the trigger is actuated for firing a new shell. Referring to the specific form shown, 35 designates a Sear which is pivotally mounted at 20 upon the barrel 2. 1? designatee the hammer actuatii'ig' end ot the Sear which lies Within a groove formed in an extension 36 of the barrei it spring` 21 is disposed in a socket 37, formed in the Sear, and normally tends to hold the hammer actuating end in the path of the lug 22. n `order to render engagement between the \sear and the hammer more effective the former may be provided with a projection 3S. The trigger actuated end of the Sein," is indicated at 2? and is provided with a lug 311 which projectol into the nath o' the Sear actuatiing` member The parte are dis posed that 'when they are in tlicwpof, tion Shown in Fig. 1 the lug @et will be located iii Such a manner that when the nieii'ihei: swung rearwaiv'lly it will` anfrage' 4the wedge shaped forward end of the lug;` 2t and 40 Swing the latter inwardly thereby causing the other ci'id ot the Hear l?) to swing ontwardiy out of engagenient with the. lug;

A teneion member 111 ie Shown and the same is pivotally mounted at 15.- At its .45 upper end said tension member is provided 'with a trigger locking portion 39 ot' complemental formation with and adapted to ce operate with the locking portion d et tis.l

trigger tor the purpose of: locking the same when the parte are in the position shown in Fig. 1. .Said nteneion member cooperates With the spring 11 for the purpose or placing the same under tension but it will be understood that in the normal position shown in Fig. 1. the Spring is 'free and not secured` at 13 to the member 1x1.

under tension. In this 'form of the invention the member 14 is connected with the sprinof 11 by a yoke shaped linlr 12 which is looped about the spring 11 and'ia pivotally G5 that the parte are in the position, Shown in li'iggxfl it will be eeen that the trigger 26 is locked by the tension member 1411 and that the hammer G Shown in a cockedgposition.

y'lio lire the cartridge the uen.' will grasp the' inei'nber wili 'torce the lug 24; inwardly.

therel'iy throwing the lug 38 out of engagement with the lug to permit the epi-ing 11 to act upon the hammer. rthe projectile discharged t'roin the cartridge will carry the.

barrel outwardly to the limit ol its; travel thereby releasing engageii'ieiit between the lug; -'land tl c member Q8 and permitting the spring4 Z1 to force the lug 38 into the path of the lug- 22, vwhich is noiv rearwardly diepoaed with reepect to the lug' 3Q. The tension member and trigger will be 'released by the user so that 'the spring 11 'will not be under tension and the springe t will return the barrel 2 to a Starting poeition. AS the lug; 538 approaches the lug upon return movement et the barrel 2, it will engage the ie and enclt the haini'iieiin thc position alioivii in i.

ln the forni shown in Eidg. 8 the spring ll .ie .interposed be@ en a. lug 10 on the hammer and a catch 16. Said catch is Asecured at 1T and ie provided with a Shoulder 1S for holdiiie' the magazine iii posistrait-bar 3f.) engages the spring 11 between its ciidwiee inouiitings and seats in a receV in the tension member 111. lt will be ob'vioue from the foregoing that the tension member 14: is retracted it will place the' spring 11 under tension in the manner Shoa/ii. in dotted liners.

ln the form shown in Fig. 9 the Spring 11 is mounted at one end in a recess of the catch 16 and engages at its other end a lug 10 mounted oii the rear eide oat the pivot 7 olf the han'zrner G. in this orinof the n vention the tension member 14 is located on the rear eide of the handle and is pivotally connected thereto at 15. A lug 31 is; provided on the tension member 14e and is adapted to engage the Spring 11 and'tcnsion the Same in the direction of the arrow.

,in Fig. 10 the han'in'ier actuating spring 11 is mounted upon a movable part 14a at 3l, which. pai-t ispivoted at 15". Spring 11 actua-tee a reciprocating hammer 32 mounted in a. Way 33 in the part Bel and said hammer ie provided Vwith a tiring pin' V and a lug 38. n. Spring actuated Sear 36 is pivotaly mounted at 37 and engages seid lug 38 and is also adapted to be actuated by an extension Q8 of the trigger 25.

An automatcfre erm comprising in`comlbnaton, a sdably mounted Darrel provided with' hammer. cooking means, a triggerv adapted to coperate with said means to hrow fthe seme into y non-engagin posi. 'Home hammer adapted to be cocked y said means, a main spring normally free and enl ANDREA-S WILHELM SCHWARZLOSE.

Witnesses WOLDEMAR HAUPT, ARTHUR SCHROEDER.A 

